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Transcoding 3840x2160 60fps MP4 to WEBM, best settings?

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Thomas Brigantino
Transcoding 3840x2160 60fps MP4 to WEBM, best settings?
on Mar 18, 2016 at 6:56:02 pm


I am using Open Broadcast Software to screen capture 3840x2160 60fps in H.264 in a MP4 container.

I included a LOG file showing my current settings.

The issue rests in the transcoding the encoding from OSB MP4 to WEBM.

I am arriving at 5 minutes of recorded video from OBS takes 1:30 minutes to convert to WEBM.

I have 2 i7-3960 3.3, 49gb RAM, Windows 7 64-bit and working off a 2tb SSD.

I am using FFMPEG with the myFFMPEG interface as it is easier to process for me. I have Max. batch threads set to 8 and CPU Cores set to 12 which they are all engaged.

I have to record 30 minutes worth of screen capture and I am thinking of how to minimize the amount of time it takes for that to be processed.

Is the 5 minute transcode of 1:30 minutes a good indicator if I was to transcode 6x that amount of time it would be 6x lengthier to transcode?

Any suggestions on what FFMPEG settings I can use to reduce the transcode time and the application I use, myFFMPEG, can accept arguments.

Thank you kindly for through and looking forward to your response!


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Lou Logan
Re: Transcoding 3840x2160 60fps MP4 to WEBM, best settings?
on Mar 24, 2016 at 5:36:24 pm

Why do you want WebM? Also, WebM is just a container format, so I must ask if you are outputting VP8 or VP9 video.

You should show your ffmpeg command and the complete console output/log.

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